Abstract
Phytoextraction by using plants for accumulating contaminant metals in the aboveground parts is a cost-effective and environmentally safe method of soil remediation. The present study was conducted to determine the effect of Cd contamination in soil, with and without adding EDTA and citric acid on the physiological parameters of maize plant. For this, pot experiment was conducted using two maize varieties, two Cd levels (150 and 300 mg/kg) were applied at the time of sowing and EDTA and citric acid (1 mM each) applied after 10 days of germination. Results indicated that Cd contamination in the growth medium influenced a number of metabolic processes in maize such as reduction in chlorophyll contents, photosynthesis, transpiration rate, stomatal conductance and water use efficiency. This reduction was more significant by increasing Cd level and also by adding EDTA in growth medium. Trend of reduction was Cd+EDTA > Cd > citric acid+Cd > citric acid. Similarly water potential, osmotic and turgor potential also reduced by Cd stress. Plants growing under Cd+EDTA and Cd+citric acid showed higher reduction in water and osmotic potential than Cd alone. Conclusively, Cd had a negative impact on overall health of maize plant while citric acid enhanced the Cd tolerance, nevertheless EDTA improved Cd uptake in maize plants, addition of EDTA in the growth medium produced more detrimental effects as compared to Cd alone.
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Claims 10
Claim · model-written summary
Cd contamination reduced chlorophyll content, photosynthesis and transpiration.
- Treatment
- Cd contaminatione0
- Outcome
- chlorophyll contents, photosynthesis, transpiration ratee0
- Direction
- reductione0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd contamination in the growth medium influenced a number of metabolic processes in maize such as reduction in chlorophyll contents, photosynthesis, transpiration rate, stomatal conductance and water use efficiency.”
Claim · model-written summary
Cd contamination reduced stomatal conductance and water use efficiency.
- Treatment
- Cd contaminatione0
- Outcome
- stomatal conductance and water use efficiencye0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cd contamination in the growth medium influenced a number of metabolic processes in maize such as reduction in chlorophyll contents, photosynthesis, transpiration rate, stomatal conductance and water use efficiency.”
Claim · model-written summary
Increasing Cd level intensified the reduction in metabolic processes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reduction was more significant by increasing Cd level”
t0“Maize”
Claim · model-written summary
Adding EDTA intensified the metabolic reduction.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This reduction was more significant by increasing Cd level and also by adding EDTA in growth medium.”
t0“Maize”
Claim · model-written summary
Cd stress reduced water, osmotic and turgor potential.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similarly water potential, osmotic and turgor potential also reduced by Cd stress.”
t0“Maize”
Claim · model-written summary
Cd plus EDTA caused greater reduction in water and osmotic potential than Cd alone.
- Treatment
- Cd+EDTAe0
- Outcome
- water and osmotic potentiale0
- Direction
- higher reductione0
- Comparator
- Cd alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants growing under Cd+EDTA and Cd+citric acid showed higher reduction in water and osmotic potential than Cd alone.”
t0“Maize”
Claim · model-written summary
Cd plus citric acid caused greater reduction in water and osmotic potential than Cd alone.
- Treatment
- Cd+citric acide0
- Outcome
- water and osmotic potentiale0
- Direction
- higher reductione0
- Comparator
- Cd alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants growing under Cd+EDTA and Cd+citric acid showed higher reduction in water and osmotic potential than Cd alone.”
t0“Maize”
Claim · model-written summary
Citric acid enhanced maize Cd tolerance.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“citric acid enhanced the Cd tolerance”
t0“Maize”
Claim · model-written summary
EDTA improved Cd uptake in maize.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“EDTA improved Cd uptake in maize plants”
Claim · model-written summary
EDTA with Cd had more detrimental effects than Cd alone.
- Treatment
- addition of EDTAe0
- Outcome
- detrimental effectse0
- Direction
- more detrimentale0
- Comparator
- Cd alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“addition of EDTA in the growth medium produced more detrimental effects as compared to Cd alone.”
t0“Maize”
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